Mandibular Medial Osteotomy Modifications and Postoperative Stability
The Effect of Mandibular Medial Osteotomy Modifications on Postoperative Stability Following Orthognathic Surgery
研究概览
地位
条件
详细说明
This study aims to evaluate and compare the effects of two different medial mandibular osteotomy modifications, namely the Hunsuck and Posnick techniques, on postoperative skeletal stability and relapse in patients undergoing orthognathic surgery.
Patients who meet the study eligibility criteria and are scheduled to undergo bilateral sagittal split ramus osteotomy (BSSO) as part of orthognathic surgery will be included. Depending on the medial mandibular osteotomy technique used, patients will be evaluated in two groups: those undergoing the Hunsuck modification and those undergoing the Posnick modification.
Preoperative and postoperative radiographic records will be evaluated to assess skeletal changes associated with each osteotomy technique. Postoperative skeletal stability will be assessed by comparing relevant mandibular and skeletal reference points and angular measurements between the preoperative, immediate postoperative, and follow-up imaging records. The amount and direction of postoperative skeletal relapse will be determined based on changes occurring during the follow-up period.
The primary objective is to determine whether the Hunsuck and Posnick modifications differ in terms of postoperative skeletal stability and relapse following orthognathic surgery. Secondary evaluations may include assessment of the magnitude and direction of mandibular positional changes and comparison of the radiographic outcomes between the two techniques.
The findings of this study may provide clinically relevant information regarding the influence of medial mandibular osteotomy design on postoperative skeletal stability and may help guide the selection of an appropriate osteotomy technique in orthognathic surgery.
研究类型
注册 (估计的)
阶段
- 不适用
联系人和位置
学习联系方式
- 姓名：Emine Fulya Akkoyun, Dr.
- 电话号码：+905372676871
- 邮箱：efulyaakkoyun@hotmail.com
学习地点
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Fatih
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Istanbul、Fatih、土耳其（türkiye）、34093
- 招聘中
- Bezmialem Vakif University
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接触：
- Emine Fulya Akkoyun, Dr.
- 电话号码：+905372676871
- 邮箱：efulyaakkoyun@hotmail.com
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-
参与标准
资格标准
适合学习的年龄
- 成人
- 年长者
接受健康志愿者
描述
Inclusion Criteria:
- Patients with an indication for orthognathic surgery who are planned to undergo bimaxillary orthognathic surgery.
- Patients who have undergone preoperative orthodontic treatment.
- Patients aged 18-65 years.
Exclusion Criteria:
- Patients who develop an unfavorable split (bad split) during surgery.
- Patients with cleft lip and palate, craniofacial syndromes, or a history of facial trauma.
- Patients who have previously undergone orthognathic surgery and require revision surgery.
- Patients whose computed tomography (CT) records are inadequate for the required measurements.
学习计划
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：单身的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Hunsuck Modification Group
Patients undergoing orthognathic surgery with bilateral sagittal split ramus osteotomy (BSSO) will undergo medial mandibular osteotomy using the Hunsuck modification.
The osteotomy will be performed according to the Hunsuck technique, with the medial horizontal osteotomy terminating at the level of the lingula and extending posteriorly to facilitate the sagittal split.
Postoperative skeletal stability and relapse will be evaluated during the follow-up period.
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Bilateral sagittal split ramus osteotomy will be performed as part of orthognathic surgery to correct the planned mandibular skeletal deformity.
The mandibular ramus and body will be divided using the assigned medial osteotomy modification (Hunsuck or Posnick), followed by sagittal splitting of the mandible.
The distal mandibular segment will then be repositioned according to the preoperative surgical plan and stabilized using appropriate osteosynthesis.
Postoperative skeletal stability and mandibular relapse will be evaluated during the follow-up period.
The Hunsuck modification of the medial mandibular osteotomy will be performed during bilateral sagittal split ramus osteotomy (BSSO).
The medial horizontal osteotomy will be initiated at the lingula and extended posteriorly for a short distance, according to the Hunsuck modification.
The remaining steps of the BSSO will be performed using the standard surgical technique.
Postoperative skeletal stability and relapse will be assessed using preoperative, immediate postoperative, and follow-up radiographic evaluations
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有源比较器：Posnick Modification Group
Patients undergoing orthognathic surgery with bilateral sagittal split ramus osteotomy (BSSO) will undergo medial mandibular osteotomy using the Posnick modification.
The osteotomy will be performed according to the Posnick technique, with the modified medial osteotomy design extending posteriorly in accordance with the technique.
Postoperative skeletal stability and relapse will be evaluated during the follow-up period.
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Bilateral sagittal split ramus osteotomy will be performed as part of orthognathic surgery to correct the planned mandibular skeletal deformity.
The mandibular ramus and body will be divided using the assigned medial osteotomy modification (Hunsuck or Posnick), followed by sagittal splitting of the mandible.
The distal mandibular segment will then be repositioned according to the preoperative surgical plan and stabilized using appropriate osteosynthesis.
Postoperative skeletal stability and mandibular relapse will be evaluated during the follow-up period.
The Posnick modification of the medial mandibular osteotomy will be performed during bilateral sagittal split ramus osteotomy (BSSO).
The medial horizontal osteotomy will be performed according to the Posnick modification, with the osteotomy design extending posteriorly along the medial aspect of the mandibular ramus as described for this technique.
The remaining steps of the BSSO will be performed using the standard surgical technique.
Postoperative skeletal stability and relapse will be assessed using preoperative, immediate postoperative, and follow-up radiographic evaluations.
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Postoperative Skeletal Relapse
大体时间：1 year
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The primary outcome will be the amount and percentage of skeletal relapse between 1 month and 12 months after orthognathic surgery (T3-T1), assessed using three-dimensional cephalometric and skeletal measurements.
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1 year
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合作者和调查者
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (估计的)
研究完成 (估计的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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